{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["hyponym of", "compare", "used for", "conjunction"], "input": "Since acquiring the knowledge for a user model is a fundamental problem in user modeling , a section is devoted to this topic ."}
{"hyponym of": [], "compare": [], "used for": [{"subject": "user model", "object": "user modeling"}], "conjunction": []}